/*
 * file hijack.h
 *
 * Hth's TCP Hijacker
 *
 * Hth networks
 * Copyright 2009
 * htt://www.unix-junkies.org
 * mail me at : hth at unix-junkies dot org
 *
 *
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the University of California, Berkeley nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef HIJACK_H
#define HIJACK_H

/*
 * === I N C L U D E S ===
 */
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>

#include <pcap.h>

/*
 * === C O N S T A N T S ===
 */
#define HIJACK_ERRBUF  1024
#define MAX_VULN_CHECK_PROBES       10
#define VULN_CHECK_IDLE_SECONDS     1


/*
 * === I N T E R N A L  T Y P E S ===
 */
typedef struct {
    char *errorBuffer;      /* assume this is a HIJACK_ERRBUF long buffer */
    pcap_t *pd;             /* pcap descriptor */
    int sock;               /* packet injection socket */
} hijack_t;


/*
 * === F U N C T I O N S  P R O T O T Y P E S ===
 */
hijack_t * hijack_startup(char *errbuf);
void hijack_shutdown(hijack_t *hh);
char * hijack_error(hijack_t *hh);
int hijack(hijack_t *hh);


#endif /* HIJACK_H */

